Title: Physical and Chemical Changes Purpose: Recognize and distinguish between chemical and physical changes Apparatus and Material: evaporating dish, Bunsen burner, wood splint, test tubes, micro spatula, dropper, mortar and pestle, test tube holder, safety goggles, lab apron. Hypothesis: If we use these materials and use magnets, water, burners, and filters on the mixtures and elements given we should determine what kind of effect these materials given will have on these mixtures and elements, physical or chemical. Label each substance on seven pieces of paper. Physical and Chemical Changes Say you are presented with two beakers, beaker A and beaker B, each containing a white, powdery compound. From your initial observations, you suspect that the two beakers contain the same compound.
Physical and Chemical Properties
Physical and Chemical Properties Free Essay Example
Benzoic acid and water are thus produced. The reaction is exothermic and temperature is maintained by external cooling. The toluene is then separated and recycled to the first oxidizing reactor. The pure benzoic acid is fed to a second reactor, where it is oxidized to phenol by air and steam under 1. Also the polarity of drug is partially since there are no charges. It seems like its partition happens more in lipid because of the presence many non-polar hydrocarbons than polar. It can be ionized in H2O since there is acidic functional groups phenol and amide.
Please join StudyMode to read the full document. Section 3: Procedure In this experiment, I observed substances in their natural state, and recorded their apparent physical properties. I then tested the substances to determine how they react when their natural environments were altered. The pure substances were tested to see how they reacted with added Hydrochloric Acid, Dilute NaOH, heat, cold and hot water. I also was to determine if the substances were acidic or basic after being heated in water, by using litmus paper.
New Physical Properties Discussions about physicalism, reduction, special sciences, the layered image of reality, multiple realizability, emergence, downward causation, etc. The domain of physical properties would thus have been established once and for all. It is my purpose in this paper to explore the alternative hypothesis that there can be, and that in fact there are, new physical. The physical properties and chemical properties are essential to a chemical compound, these properties help identify the substance.